Sprint Cup driver Denny Hamlin is expected to miss six weeks with a compression fracture in his lower back, Joe Gibbs Racing announced Tuesday night.Hamlin was injured in a last-lap crash involving former Joe Gibbs Racing teammate Joey Logano on Sunday at Auto Club Speedway.

After an evaluation by Dr. Jerry Petty of Carolina Neurosurgery & Spine Associate, it was determined that Hamlin suffered an L1 compression fracture. Hamlin will not require surgery, but recovery time is estimated at six weeks.

"If me getting back in a car was based on pain tolerance, then I would be in the car next week," Hamlin tweeted. "There's just more to it that I can't control."

No decision has been made on a replacement driver for Hamlin during his absence from the NASCAR Sprint Cup Series, Joe Gibbs Racing announced.

One potential candidate to replace Hamlin is Elliott Sadler, who drives Nationwide for JGR. Sadler is a former full-time Cup driver who has won three times in the Sprint Cup series.

In Sunday's race, Hamlin's car hit the inside retaining wall head-on after being spun by Logano on the final lap. Hamlin's car hit a small portion of the track where the SAFER barriers designed to reduce impact did not cover the concrete wall.

Hamlin climbed out of his car and immediately collapsed. He was carried off on a stretcher and then airlifted to a nearby hospital.

Hamlin has a history of back injuries. He sat out the Nationwide Series race at Daytona International Speedway last season because of back spasms from an incident at Kentucky. He told reporters then he had bulging disks in his back.

Man, that is just sad news. I've always liked Denny. What a complete shame. They talked to him before the race about the past few week's ordeals and putting it behind him...now this. I haven't seen much news the last couple of days, but dam I hope that Joey has made some apology to Hamlin after stating "he got what he deserved." Let's face it, this is clearly Joey's fault. The kid will learn, and probably the hard way, that there's a difference between bumping someone, and wrecking you and/or the other, in order to win...or even finish...a race.

This is such a shame. No one deserves this kind of injury. Denny will always have to be careful of his back. Taking his family back to Arizona to recover will probably be the best thing he can do. I wish him the best.

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I had a feeling it was going to be this and I think Denny did too. I wish him a speedy recovery. At least with the brace we know he won't be playing golf while he's here but the weather is excellent for relaxing and getting some sun!

But ugh, my problem is they're probably going to put never was Elliott in for Martinsville since Vickers will be in the 55. My hope is that Vickers gets the rest of the rides while Denny's out. What a shame he'll miss 2 of his best tracks.

"The individual has always had to struggle to keep from being overwhelmed by the tribe" - Friedrich Nietzsche

Well on my wish list is JGR puts 5 different drivers in the car to wreck Joey all 5 weeks that Denny misses. All 5 saying oops! Didnt mean it. other than that. I hope Vickers or Regan Smith gets the ride, even though I think Sadler will get it, who I dont want having it.

Ya know... upon further review... Denny could still make the Chase. The #11 team is more than capable of getting 3 wins and reaching the Top 20 in points -- should be enough for a Wild Card. If he only misses four races, he'll be in a deep hole but not totally out of contention if he can string together some good finishes (he's 10th in points right now). Who knows? He might even attempt to start the Richmond race to qualify for the points (couldn't he fit in a seat set-up for Elliot Sadler?); and he has raced in the past recovering from knee reconstruction (I know: not the same kinda pain). Anyway, maybe I'm reachin'; I just don't wanna sell him and Darian short. Right now, I might even give Denny better odds at making the Chase than I'd give Joey.

Joey Logano had better bring a tank to Martinsville Speedway on April 7.

After the news that Denny Hamlin will be sidelined for about six weeks with injuries sustained from a last-lap wreck with Logano in Sunday’s Auto Club 400, there will be no shortage of drivers willing to hand out a little frontier justice – garage style.

On Tuesday, NASCAR Sprint Cup Series director John Darby ruled "no harm, no foul" after the incident between Logano and Hamlin that ultimately shot the No. 11 Toyota into the pit road wall.

“It was the last lap of the race and the last time they were both going to see Turns 3 and 4,” Darby said. “They were side by side. And everything that great competitors do; if somebody was of the mindset to retaliate, they probably would have been lined up nose to tail to start with and somebody would have drove into the other car and spun them around.

“But in this case, that is so far from the opposite that it never even crossed anybody's mind that I'm aware of that paid attention to the race, that that was part of it.”

But Logano’s actions and post-race words suggest otherwise.

And while one hopes that the 22-year-old’s comments would have been toned down considerably had he known the severity of Hamlin’s condition, it doesn’t erase the fact that following the race Logano said, “Denny Hamlin was not going to win that race, no,” and “he probably shouldn't have done what he did last week, so that's what he gets.”

It’s ironic that Hamlin's criticizing the Generation 6 car garnered a greater punitive response from NASCAR than Logano's putting a driver out of commission.

Although Hamlin got the worst of it on Sunday as well, that wasn’t the only incident on Logano’s expanding rap sheet. Logano ran Kurt Busch down onto the grass earlier in the race. And on the final restart, he did the same to Tony Stewart, sending the three-time champ and former Joe Gibbs Racing teammate over the edge and onto pit road to confront Logano after the race.

“Dumb little son-of-a-(expletive) runs us clear down to the infield,” Stewart said. “He wants to (expletive) about everybody else and he's the one who drives like a little (expletive). I'm going to bust his a--.”

Whether it’s the sense of entitlement on or off the track — as Smoke alluded to when he referred to Logano as “just a little rich kid that has never had to work in his life” — in the past five years the current Penske racer attracted the ire of NASCAR’s top bad a--es from Stewart to Ryan Newman and Kevin Harvick.

Arguably, Harvick dumped Logano in the 2010 June Pocono Cup race to teach him a lesson following an earlier dust-up in a Nationwide Series race at Bristol. His incident with Harvick was well-documented and resulted in Logano’s line “it’s probably not his fault. His wife wears the firesuit in the family and tells him what to do.”

Two months later at Michigan, Logano had a similar post-race run-in with Newman when the veteran told the then 20-year-old “learn how to drive” and “learn how to control your car.” But perhaps what was most prophetic from Newman was “you’ve got one coming."

It looks as if Newman will have to get in line.

Considering Hamlin’s skill level at Martinsville Speedway, where he’s won four of the past 10 Cup races, it’s criminal that he’ll be sitting out April 7. What’s even more difficult to fathom is that Hamlin, who has qualified for every Chase for the Sprint Cup since he’s been eligible in 2006 – the only racer other than Jimmie Johnson to make that claim – will not be a contender for the driver’s championship this season.

Sure, there’s a short list of candidates who can substitute in the interim whether it’s Elliott Sadler or Brian Vickers — both drivers already in the Toyota camp. But neither competitor can boast Hamlin’s resume or his talent quite frankly.

And neither can Logano.

In the "Boys have at it" era, the garage will indeed continue to police itself. If Logano expects to avoid trouble over the next few months, he’s going to need some mad skills to outrun the competition because right now the target on his car will be larger than the sponsor logo on the No. 42 Chevy.

A little humility could go a long way. As of Monday, Logano had not called on Hamlin to apologize. That might be a good place to start if he has any desire of joining the Sprint Cup fraternity. Otherwise, Logano will continue to find himself in the crosshairs – starting two weeks from now at Martinsville.

Well I'm sorry this is an off weekend cause I'm so looking forward to seeing the treatment stale bread gets from the other drivers. Plus the 11 and 22 will be next to each other in the garage at Martinsville.

"The individual has always had to struggle to keep from being overwhelmed by the tribe" - Friedrich Nietzsche